CA2012120A1 - Interference detection apparatus for use in digital mobile communications system - Google Patents

Interference detection apparatus for use in digital mobile communications system

Info

Publication number
CA2012120A1
CA2012120A1 CA2012120A CA2012120A CA2012120A1 CA 2012120 A1 CA2012120 A1 CA 2012120A1 CA 2012120 A CA2012120 A CA 2012120A CA 2012120 A CA2012120 A CA 2012120A CA 2012120 A1 CA2012120 A1 CA 2012120A1
Authority
CA
Canada
Prior art keywords
minimum
field strength
path metric
detection apparatus
communications system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2012120A
Other languages
English (en)
French (fr)
Other versions
CA2012120C (en
Inventor
Seiji Kondou
Hiroyasu Muto
Yoshihisa Isoda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
Seiji Kondou
Hiroyasu Muto
Yoshihisa Isoda
Nec Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1062857A external-priority patent/JPH02241249A/ja
Priority claimed from JP1100616A external-priority patent/JP2765037B2/ja
Application filed by Seiji Kondou, Hiroyasu Muto, Yoshihisa Isoda, Nec Corporation filed Critical Seiji Kondou
Publication of CA2012120A1 publication Critical patent/CA2012120A1/en
Application granted granted Critical
Publication of CA2012120C publication Critical patent/CA2012120C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Quality & Reliability (AREA)
  • Error Detection And Correction (AREA)
  • Radio Transmission System (AREA)
CA002012120A 1989-03-15 1990-03-14 Interference detection apparatus for use in digital mobile communications system Expired - Lifetime CA2012120C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP62857/1989 1989-03-15
JP1062857A JPH02241249A (ja) 1989-03-15 1989-03-15 干渉検出方式
JP100616/1989 1989-04-20
JP1100616A JP2765037B2 (ja) 1989-04-20 1989-04-20 アンテナダイバーシチ受信機

Publications (2)

Publication Number Publication Date
CA2012120A1 true CA2012120A1 (en) 1990-09-15
CA2012120C CA2012120C (en) 1994-10-18

Family

ID=26403914

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002012120A Expired - Lifetime CA2012120C (en) 1989-03-15 1990-03-14 Interference detection apparatus for use in digital mobile communications system

Country Status (5)

Country Link
US (1) US5157672A (un)
EP (1) EP0388163B1 (un)
AU (1) AU635920B2 (un)
CA (1) CA2012120C (un)
DE (1) DE69024386T2 (un)

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DE4039245A1 (de) * 1990-12-08 1992-06-11 Philips Patentverwaltung Empfaenger mit mindestens zwei empfangszweigen
SE469051B (sv) * 1991-09-10 1993-05-03 Ericsson Telefon Ab L M Metod foer att detektera kanaltillhoerigheten foer ett antal kanaler i ett mobilradiosystem
CA2109576C (en) * 1992-04-24 1998-06-16 Patrick J. Marry Method and apparatus for determining signal transmission quality levels of a transmitted signal
IT1259032B (it) * 1992-05-25 1996-03-11 Alcatel Italia Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo
CA2116736C (en) * 1993-03-05 1999-08-10 Edward M. Roney, Iv Decoder selection
US5912907A (en) * 1993-11-22 1999-06-15 Thomson Consumer Electronics, Inc. Satellite receiver code rate switching apparatus
BR9307901A (pt) * 1993-11-22 1996-08-27 Thomson Consumer Electronics Aparelho decodificador
US5383219A (en) * 1993-11-22 1995-01-17 Qualcomm Incorporated Fast forward link power control in a code division multiple access system
FI98027C (fi) * 1995-01-10 1997-03-25 Nokia Telecommunications Oy Pakettiradiojärjestelmä ja päätelaitteisto pakettiradiojärjestelmää varten
FI950843A (fi) * 1995-02-23 1996-08-24 Nokia Telecommunications Oy Menetelmä yhteyden laadun määrittämiseksi sekä vastaanotin
US6137840A (en) * 1995-03-31 2000-10-24 Qualcomm Incorporated Method and apparatus for performing fast power control in a mobile communication system
TW347616B (en) * 1995-03-31 1998-12-11 Qualcomm Inc Method and apparatus for performing fast power control in a mobile communication system a method and apparatus for controlling transmission power in a mobile communication system is disclosed.
US6977967B1 (en) 1995-03-31 2005-12-20 Qualcomm Incorporated Method and apparatus for performing fast power control in a mobile communication system
US5995562A (en) * 1995-10-25 1999-11-30 Nec Corporation Maximum-likelihood decoding
US5737365A (en) * 1995-10-26 1998-04-07 Motorola, Inc. Method and apparatus for determining a received signal quality estimate of a trellis code modulated signal
FI100566B (fi) * 1996-01-24 1997-12-31 Nokia Telecommunications Oy Kehyksen laadun tunnistamismenetelmä ja vastaanotin
US5949796A (en) * 1996-06-19 1999-09-07 Kumar; Derek D. In-band on-channel digital broadcasting method and system
US5893035A (en) * 1996-09-16 1999-04-06 Qualcomm Incorporated Centralized forward link power control
US5892774A (en) * 1996-12-12 1999-04-06 Qualcomm Incorporated Phase shift encoded subchannel
US5991284A (en) * 1997-02-13 1999-11-23 Qualcomm Inc. Subchannel control loop
US6243568B1 (en) * 1997-03-22 2001-06-05 Sharp Laboratories Of America, Inc. System and method for intuitively indicating signal quality in a wireless digital communications network
KR100243213B1 (ko) * 1997-06-14 2000-02-01 윤종용 제로상태평가량을이용한비터비복호데이터의품질평가장치
US6097972A (en) * 1997-08-29 2000-08-01 Qualcomm Incorporated Method and apparatus for processing power control signals in CDMA mobile telephone system
US6141388A (en) * 1998-03-11 2000-10-31 Ericsson Inc. Received signal quality determination method and systems for convolutionally encoded communication channels
US6308054B2 (en) 1999-03-02 2001-10-23 Hitachi, Ltd. Diversity wireless communication method and its wireless communication apparatus
JP2001184149A (ja) * 1999-12-27 2001-07-06 Toshiba Corp 情報処理装置および動作状態制御方法
US8199696B2 (en) 2001-03-29 2012-06-12 Qualcomm Incorporated Method and apparatus for power control in a wireless communication system
US6771442B2 (en) 2001-06-29 2004-08-03 Infineon Technologies Ag Off-track interference emulator
US7162675B2 (en) * 2002-04-05 2007-01-09 Lucent Technologies Inc. Error detection methods in wireless communication systems
US7577249B2 (en) * 2003-01-06 2009-08-18 Gn Netcom, Inc. Wireless remote controlled handset lifter system using magnetically coupled ring detection
US7903764B2 (en) * 2004-05-10 2011-03-08 Broadcom Corporation Integrated burst FSK receiver
JP2005348338A (ja) * 2004-06-07 2005-12-15 Alps Electric Co Ltd 混信判定方法及び端末装置
US9209937B2 (en) * 2007-06-28 2015-12-08 Telefonaktiebolaget L M Ericsson (Publ) Reliable decoding of a high-speed shared control channel
US8429475B2 (en) * 2009-02-27 2013-04-23 Research In Motion Limited State dependent advanced receiver processing in a wireless mobile device

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US4214213A (en) * 1977-10-25 1980-07-22 Rca Corporation Signal selecting system
IL68987A (en) * 1982-08-03 1986-12-31 Motorola Inc Method and apparatus for measuring the strength of a radio frequency signal
JPS59181732A (ja) * 1983-03-31 1984-10-16 Toshiba Corp 携帯用無線機におけるダイバ−シチ−受信方式
DE3566856D1 (en) * 1984-06-13 1989-01-19 Ant Nachrichtentech Quality measurement method for data transmission
US4823398A (en) * 1985-12-23 1989-04-18 Kazuya Hashimoto Diversity receiver
US4704734A (en) * 1986-02-18 1987-11-03 Motorola, Inc. Method and apparatus for signal strength measurement and antenna selection in cellular radiotelephone systems
GB8609711D0 (en) * 1986-04-21 1986-05-29 Clark A P Channel estimation & detection
JPS6333028A (ja) * 1986-07-26 1988-02-12 Nec Corp 信号検出方式
US4945549A (en) * 1986-11-13 1990-07-31 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Trellis coded modulation for transmission over fading mobile satellite channel
US4932029A (en) * 1987-07-24 1990-06-05 Ant Nachrichtentechnik Gmbh Method and apparatus for correcting errors in convolutional code signals
US4922507A (en) * 1987-12-01 1990-05-01 California Institute Of Technology Multiple trellis coded modulation
US4884272A (en) * 1988-02-10 1989-11-28 Mcconnell Peter R H Maximum likelihood diversity receiver
JP2708777B2 (ja) * 1988-05-19 1998-02-04 三洋電機株式会社 ダイバーシティ受信装置
JP2693488B2 (ja) * 1988-06-09 1997-12-24 株式会社東芝 ダイバーシチ受信方式
US4941154A (en) * 1989-05-30 1990-07-10 At&T Bell Laboratories Trellis coding method and arrangement for fractional bit rates

Also Published As

Publication number Publication date
EP0388163B1 (en) 1995-12-27
DE69024386D1 (de) 1996-02-08
CA2012120C (en) 1994-10-18
EP0388163A3 (en) 1992-06-10
EP0388163A2 (en) 1990-09-19
US5157672A (en) 1992-10-20
AU635920B2 (en) 1993-04-08
AU5141790A (en) 1990-09-20
DE69024386T2 (de) 1996-05-30

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